CN203093239U - Multi-layer co-extrusion breathable film - Google Patents
Multi-layer co-extrusion breathable film Download PDFInfo
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- CN203093239U CN203093239U CN 201320088683 CN201320088683U CN203093239U CN 203093239 U CN203093239 U CN 203093239U CN 201320088683 CN201320088683 CN 201320088683 CN 201320088683 U CN201320088683 U CN 201320088683U CN 203093239 U CN203093239 U CN 203093239U
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- layer
- ventilated membrane
- density polyethylene
- low density
- breathable film
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Abstract
The utility model discloses a multi-layer co-extrusion breathable film which comprises a core layer, wherein the core layer is fixedly connected with an upper surface layer and a lower surface layer respectively. According to the multi-layer co-extrusion breathable film disclosed by the utility model, by adopting a multi-layer co-extrusion unidirectional two-level stretching technology, the mechanical strength of the breathable film is greatly improved, and the hole occurrence rate during the production and processing of the breathable film is reduced; and the core layer is made from a raw material with lower cost, thus the production cost is greatly reduced.
Description
Technical field
The utility model relates to a kind of multi-layer co-extruded ventilated membrane.
Background technology
Ventilated membrane is also referred to as microporous barrier, is characterized in permeable watertight.Because of being widely used in disposable personal hygiene article, disposable medical protective articles, automobile cover, warming moisture clothes, the fresh-keeping packaging of agricultural byproducts, family gradually, its this special performance the field such as spins.
Current, the preparation method of ventilated membrane has: the height that stretches is filled the inorganic particles method, is separated into membrane technology method, hollow fiber microporous membrane technology law, chemical foaming technology method, physical mechanical puncturing technique method etc., and the high inorganic particles method of filling of stretching wherein becomes one of main production method of ventilated membrane because of advantages such as processing cost is low, easy and simple to handle, product mechanical performance excellences.
In technique known, the high polyolefin permeable membrane of filling the production of inorganic particles method that stretches has individual layer to extrude with multi-layer co-extruded according to configuration extruder quantity branch.Individual layer is extruded when preparation lightweight ventilated membrane and mainly taked to increase stretching ratio or adopt the enhancement mode vistanex to realize, but this also causes easily: the probability that 1) occurs hole in the ventilated membrane production increases, and influences the use of product; 2) raw material is selected unicity more, greatly the applicability of limiting device.
Summary of the invention
For addressing the above problem, the purpose of this utility model is to provide a kind of multi-layer co-extruded ventilated membrane, it adopts multi-layer co-extruded unidirectional two-stage stretching technique, improved the mechanical strength of ventilated membrane greatly, hole occurrence rate when reducing the ventilated membrane production and processing, and sandwich layer adopts lower-cost raw material, has greatly reduced production cost.
The utility model is the purpose that reaches above-mentioned, and the utility model adopts following technical scheme:
A kind of multi-layer co-extruded ventilated membrane comprises sandwich layer, and described sandwich layer is connected with upper epidermis, following top layer respectively.
The sandwich layer of described low density polyethylene (LDPE) is connected with the upper epidermis of LLDPE and the following top layer of LLDPE respectively; It is DOW Chemical (China) Co., Ltd that wherein said LLDPE adopts manufacturer, and its model is 2047; It is SINOPEC Beijing Yanshan Company that low density polyethylene (LDPE) adopts manufacturer, and its model is 1C7A.
The sandwich layer of described low density polyethylene (LDPE) is connected with the upper epidermis of metallocene linear-low density polyethylene and the following top layer of metallocene linear-low density polyethylene respectively; It is daelim industrial co. that wherein said metallocene linear-low density polyethylene adopts manufacturer, ltd, and its model is 9500; It is SINOPEC Beijing Yanshan Company that low density polyethylene (LDPE) adopts manufacturer, and its model is 1C7A.
The beneficial effects of the utility model are: the utility model provides a kind of multi-layer co-extruded ventilated membrane, it adopts multi-layer co-extruded unidirectional two-stage stretching technique, improved the mechanical strength of ventilated membrane greatly, hole occurrence rate when reducing the ventilated membrane production and processing, and sandwich layer adopts lower-cost raw material, has greatly reduced production cost.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
As shown in Figure 1, present embodiment provides a kind of multi-layer co-extruded ventilated membrane, comprises the sandwich layer 2 of low density polyethylene (LDPE), and the sandwich layer 2 of described low density polyethylene (LDPE) is connected with the upper epidermis 1 of LLDPE and the following top layer 3 of LLDPE respectively.It is DOW Chemical (China) Co., Ltd that wherein said LLDPE adopts manufacturer, and its model is 2047; It is SINOPEC Beijing Yanshan Company that low density polyethylene (LDPE) adopts manufacturer, and its model is 1C7A.
The described a kind of multi-layer co-extruded ventilated membrane of present embodiment, it adopts multi-layer co-extruded unidirectional two-stage stretching technique, has improved the mechanical strength of ventilated membrane greatly, hole occurrence rate when reducing the ventilated membrane production and processing, and sandwich layer adopts lower-cost raw material, has greatly reduced production cost.
Embodiment 2
As shown in Figure 1, present embodiment provides a kind of multi-layer co-extruded ventilated membrane, the sandwich layer 2 that comprises low density polyethylene (LDPE), the sandwich layer 2 of described low density polyethylene (LDPE) are connected with the upper epidermis 1 of metallocene linear-low density polyethylene and the following top layer 3 of metallocene linear-low density polyethylene respectively.It is daelim industrial co. that wherein said metallocene linear-low density polyethylene adopts manufacturer, ltd, and its model is 9500; It is SINOPEC Beijing Yanshan Company that low density polyethylene (LDPE) adopts manufacturer, and its model is 1C7A.
The described a kind of multi-layer co-extruded ventilated membrane of present embodiment, it adopts multi-layer co-extruded unidirectional two-stage stretching technique, has improved the mechanical strength of ventilated membrane greatly, hole occurrence rate when reducing the ventilated membrane production and processing, and sandwich layer adopts lower-cost raw material, has greatly reduced production cost.
Claims (3)
1. multi-layer co-extruded ventilated membrane is characterized in that: comprise sandwich layer (2), described sandwich layer (2) is respectively with upper epidermis (1), top layer (3) is connected down.
2. a kind of multi-layer co-extruded ventilated membrane according to claim 1 is characterized in that: the sandwich layer of described low density polyethylene (LDPE) (2) is connected with the upper epidermis (1) of LLDPE and the following top layer (3) of LLDPE respectively.
3. a kind of multi-layer co-extruded ventilated membrane according to claim 1 is characterized in that: the sandwich layer of described low density polyethylene (LDPE) (2) is connected with the upper epidermis (1) of metallocene linear-low density polyethylene and the following top layer (3) of metallocene linear-low density polyethylene respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320088683 CN203093239U (en) | 2013-02-26 | 2013-02-26 | Multi-layer co-extrusion breathable film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320088683 CN203093239U (en) | 2013-02-26 | 2013-02-26 | Multi-layer co-extrusion breathable film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203093239U true CN203093239U (en) | 2013-07-31 |
Family
ID=48844674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320088683 Expired - Fee Related CN203093239U (en) | 2013-02-26 | 2013-02-26 | Multi-layer co-extrusion breathable film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203093239U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106457806A (en) * | 2014-06-12 | 2017-02-22 | 陶氏环球技术有限责任公司 | Multilayer films, and articles made therefrom |
-
2013
- 2013-02-26 CN CN 201320088683 patent/CN203093239U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106457806A (en) * | 2014-06-12 | 2017-02-22 | 陶氏环球技术有限责任公司 | Multilayer films, and articles made therefrom |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20150226 |
|
| EXPY | Termination of patent right or utility model |